Research on surface ground displacement law under high tension coal mining conditions in Wuyang Mine

With the site measurement information from several observation stations, the paper had got the surface displacement law and rock displacement data under the conditions of the fully mechanized slicing mining and fully mechanized caving after the analysis Both the slicing mining and caving mining had caused surface subsidence with deep basin, surface displacement and other features In comparison with the slicing mining, the caving mining will have a surface subsidence coefficient as an initial mining activity and the surface crack and failure will be less smaller.